Novel ultrasonic water meter

Abstract

The utility model discloses a novel ultrasonic water meter which comprises a shell fixedly arranged above a fluid channel, a waterproof main battery, a circuit board and a glue pouring box assembly are contained in a cavity formed by the shell, the cavity is communicated with the outside through a drainage hole in the shell, the waterproof main battery is clamped in a main battery containing groove in the cavity, and the waterproof main battery is connected with the circuit board. A main battery containing groove is formed in the shell, the main battery containing groove extends in the axial direction, two battery holes are formed in the shell, the battery holes are blocked through battery end covers, the outer wall faces of the battery end covers are flush with the corresponding outer wall faces of the shell, the glue pouring box assembly is fixedly arranged in the shell, and the circuit board is sealed in the glue pouring box assembly in a glue pouring mode. The water meter is reasonable in structure, the service life of the water meter can be prolonged, and the anti-disassembly and anti-theft performance of the battery is good.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic water meters, in particular to a novel ultrasonic water meter. Background Art

[0002] With the development of society, the application of smart water meters in the water meter market is gradually replacing traditional mechanical water meters. However, smart water meters are basically powered by non-removable batteries, and the battery life is basically 6 years. When other metering and other electronic components can be used normally, the battery is basically replaced by replacing the entire meter after the battery life expires, which causes a lot of waste. At the same time, it will also cause the following problems. For example, the water supply pipeline will be shut down and the water will be cut off due to the replacement of the water meter, which will generate additional construction costs and affect the normal water use of users. In addition, the water meter needs to be returned to the factory for repair and battery replacement, and the entire meter needs to be disassembled. The process is complicated, time-consuming, and labor costs are high.

[0003] There are also water meters with replaceable batteries in the existing technology, but there is a common problem that the battery end cover is easy to remove (for example, the battery end cover is threadedly connected to the water meter housing), causing damage that is difficult to identify, resulting in disputes and making it impossible to identify responsibilities, or the anti-disassembly and anti-theft functions become ineffective after the battery is removed. Utility Model Content

[0004] The utility model discloses a new ultrasonic water meter, which solves the technical problems of ultrasonic water meters in the prior art, such as short service life, time-consuming and labor-intensive maintenance, or poor battery anti-tampering and anti-theft performance. It has a reasonable structure, is conducive to extending the service life of the water meter, and has good battery anti-tampering and anti-theft performance. The technical solution adopted is as follows:

[0005] A new ultrasonic water meter includes a shell fixedly mounted above a fluid channel. The shell forms a chamber housing a waterproof main battery, a circuit board, and a glue potting box assembly. The chamber is connected to the outside through a drainage hole on the shell. The waterproof main battery is mounted in a main battery accommodating slot in the chamber. The main battery accommodating slot extends axially and forms two battery holes on the shell. The battery holes are sealed by battery end covers, and the outer wall surface of the battery end cover is flush with the corresponding outer wall surface of the shell. The glue potting box assembly is fixed in the shell, and the glue potting of the circuit board is sealed in the glue potting box assembly.

[0006] On the basis of the above technical solution, it also includes a waterproof backup battery, which is arranged in a backup battery accommodating slot in the cavity, and the end of the slot wall of the main battery accommodating slot has an arc that bends toward the waterproof main battery, and the end of the slot wall of the backup battery accommodating slot has an arc that bends toward the waterproof backup battery.

[0007] Based on the above technical solution, the battery hole extends into the cavity and forms a battery bracket. The battery end cover includes a support portion and a plurality of elastic claws extending into the main battery accommodating slot. The support portion laterally abuts against the waterproof main battery to position the waterproof main battery. The plurality of elastic claws are arranged circumferentially along the battery end cover, and the end of at least one elastic claw is provided with a barb portion that can engage with the battery bracket.

[0008] On the basis of the above technical solution, the support portion is laterally in contact with the waterproof main battery via the first elastic pad, and the structural strength of the battery end cover is less than the structural strength of the shell.

[0009] Based on the above technical solution, the glue potting box assembly includes a glue potting box and a cover plate. The glue potting box has an opening at the top and forms a concave cavity for accommodating a circuit board. The cover plate is arranged above the circuit board and fixed at the opening above the glue potting box to protect the circuit board. The outer edge surface of the cover plate is spaced apart from the inner wall surface of the glue potting box to form a glue potting port and an exhaust gap. A UPS uninterruptible power supply is also provided on the circuit board.

[0010] On the basis of the above technical solution, the cover plate is made of a transparent or translucent material, and a rib plate is integrally formed on the cover plate.

[0011] Based on the above technical solution, the outer edge of the cover plate extends upward to form a curled edge, and the height of the label is designed so that the glue liquid level is above the top surface of the curled edge; at least one protective groove is formed on the inner side of the curled edge.

[0012] Based on the above technical solution, the area of ​​the cover plate facing the circuit board partially protrudes upward to form a protective cavity, and the protective cavity is designed so that the glue liquid level can close the protective cavity and leave a gap with the inner bottom surface of the protective cavity. The functional components on the circuit board corresponding to the position of the protective cavity can pass through the glue layer and extend into the protective cavity.

[0013] On the basis of the above technical solution, the glue filling box is connected to the ultrasonic water meter housing through a first snap assembly, the first snap assembly includes a first plane limit assembly and a first upper and lower limit assembly, the first plane limit assembly is used to limit the displacement of the glue filling box in the plane direction, and the first upper and lower limit assembly is used to limit the up and down movement of the glue filling box; the glue filling box is connected to the circuit board through a second snap assembly, the second snap assembly includes a second plane limit assembly and a second upper and lower limit assembly, the second plane limit assembly is used to limit the displacement of the circuit board in the plane direction, and the second upper and lower limit assembly is used to limit the up and down movement of the circuit board; the glue filling box is connected to the cover plate through a third snap assembly, the third snap assembly includes a third plane limit assembly and a third upper and lower limit assembly, the third plane limit assembly is used to limit the displacement of the cover plate in the plane direction, and the third upper and lower limit assembly is used to limit the up and down movement of the cover plate.

[0014] On the basis of the above technical solution, it also includes a movement alarm unit and a cover opening alarm unit. The shell includes a detachably connected upper shell and a lower shell. The upper shell is arranged away from the fluid channel. A perspective window and a button area are provided on the upper shell. The upper shell is hinged with a flip cover through a damping bearing. The flip cover is used to cover the perspective window and the button area. The cover opening alarm unit is arranged on the upper shell to monitor the movement of the upper shell relative to the lower shell. The movement alarm unit is used to monitor the movement of the ultrasonic water meter.

[0015] Beneficial effects

[0016] The utility model has a reasonable structure. The battery end cap is flush with the outer wall of the shell, making the outer wall smooth. Professional tools are required to complete the disassembly and replacement of the battery, which is beneficial to improving the anti-dismantling and anti-theft performance of the ultrasonic water meter. In addition, the main battery accommodating slot extends axially to form two battery holes on the lower shell, so that the operator can adaptably select a battery end cap for disassembly according to the installation space of the water meter, and has good flexibility in use. In this application, both the waterproof main battery and the waterproof backup battery are waterproof batteries, and a drainage hole is provided on the shell. This not only ensures good waterproof performance, but also greatly reduces the cost of waterproof sealing, which is economical. The waterproof backup battery effectively extends the service life of the water meter, which is beneficial to reducing the user's cost of use. The waterproof backup battery can be used as a power source when replacing the waterproof main battery, so that the water meter can operate continuously and smoothly. In addition, the ends of the main battery accommodating slot and the backup battery accommodating slot have an arc that bends towards the battery, and elastic pads are provided at both ends of the battery. This can firmly support the main battery or backup battery, so that it has a shock-absorbing and anti-loosening effect.

[0017] The battery end cover in this application has a reasonable structure and includes several elastic claws to facilitate the disassembly and assembly of the battery end cover. At the same time, the barb at the end of the elastic claw can effectively position the battery end cover to prevent the battery end cover from rotating or falling off during use, thereby affecting the normal operation of the battery.

[0018] In the present application, the glue filling box is opened upwards to facilitate the glue filling operation. The cover is made of transparent or translucent material to visualize the glue filling process. The cover is fixed at the opening of the glue filling box and can protect electronic components such as circuit boards. An exhaust gap and a glue filling port are formed between the cover and the glue filling box. This not only simplifies the structure and avoids the need for additional glue filling ports and exhaust ports, but also makes the exhaust process more uniform and smoother, which is beneficial to improving the uniformity of glue filling, reducing the generation of bubbles, and thus improving the quality of glue filling. In addition, the setting of the curling on the cover increases the contact area between the cover and the glue filling layer, and a protective groove is formed on the inner side of the curling. On the one hand, the protective groove is beneficial to enhancing the structural strength of the cover, and on the other hand, the protective groove is embedded in the glue filling layer. Even in the case of large temperature differences, the shrinkage rate of the glue filling layer and the cover can be ensured to be consistent, thus avoiding the occurrence of cracking of the contact surface due to different material shrinkage rates, thereby having excellent sealing reliability. The cover plate also features multiple protective cavities. The glue layer seals the openings of the protective cavities, leaving a gap between the cavity and the bottom. This allows functional components on the circuit board, such as the display, antenna, and communication components, to extend into the sealed chambers within the protective cavity, ensuring optimal performance. Furthermore, during the glue pouring operation, the glue enters the protective cavity from the bottom up, sealing it and compressing the air inside, creating a pressure differential between the inside and outside of the cavity. This further enhances the sealing performance and effectively isolates it from external moisture.

[0019] In this application, the glue filling box adopts multiple snap-on components to realize assembly connection with the lower shell, circuit board and cover plate of the ultrasonic water meter respectively. Not only is the assembly operation efficient, but it can also reduce the use of connecting parts such as screws, avoiding the use risks caused by the use of connecting parts. At the same time, it is convenient for disassembly and assembly, and facilitates subsequent inspection and maintenance, which is conducive to improving assembly efficiency and reducing labor.

[0020] In addition, the shell in this application includes an upper shell and a lower shell, and a flip cover is also provided on the upper shell, which has a better protection effect and is convenient for checking the water meter condition.

[0021] In addition, there are movement alarm unit and cover opening alarm unit. When the upper shell is damaged or removed or the water meter is moved as a whole, an alarm signal will be issued to improve the anti-dismantling and anti-theft performance of the water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0023] Figure 1: Schematic diagram of the three-dimensional structure of the ultrasonic water meter in the utility model;

[0024] Figure 2 : Schematic diagram of the structure of the waterproof main battery and the waterproof backup battery assembled in the lower shell;

[0025] Figure 3 : Figure 2 Schematic diagram of the structure in which the main battery and backup battery are removed;

[0026] Figure 4 : Schematic diagram of the three-dimensional structure of the battery end cover;

[0027] Figure 5 : Schematic diagram of the three-dimensional structure of the lower shell;

[0028] Figure 6 : Schematic diagram of the exploded structure of the ultrasonic water meter after removing the circuit board;

[0029] Figure 7 : Schematic diagram of the exploded structure of the glue filling box assembly;

[0030] Figure 8 : Schematic diagram of the three-dimensional structure of the glue filling box assembly;

[0031] Figure 9 : Schematic diagram of the structure of the glue filling box assembly top view;

[0032] Figure 10 : Schematic diagram of the three-dimensional structure of the ultrasonic water meter housing after removing the upper housing;

[0033] Figure 11 : Schematic diagram of the three-dimensional structure of the lower shell;

[0034] Figure 12 : Schematic diagram of the three-dimensional structure of the glue filling box Figure 1 ;

[0035] Figure 13 : Schematic diagram of the three-dimensional structure of the glue filling box Figure 2 ; DETAILED DESCRIPTION

[0036] The following description and accompanying drawings sufficiently illustrate the specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, including all available equivalents thereof. Herein, the terms "first," "second," and the like are used solely to distinguish one element from another and do not require or imply any actual relationship or order between these elements. In practice, the first element can also be referred to as the second element, and vice versa. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a structure, device, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such structure, device, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the structure, device, or apparatus comprising the element. The various embodiments herein are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Similar or identical parts between the various embodiments can be referenced to each other.

[0037] The terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this document and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be mechanical or electrical connections, or they can be internal connections between two elements, they can be directly connected, or they can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0038] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0039] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0040] In this article, the term "and / or" is used to describe the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0041] like Figures 1 to 13The new ultrasonic water meter shown in FIG. 1 includes a housing fixedly mounted above a fluid channel 100. The housing includes an upper housing 1 and a lower housing 2 detachably connected by screws at four corners. Figure 1 As shown, the upper shell 1 is arranged away from the fluid channel 100, and is provided with a perspective window and a key area. In addition, the upper shell 2 is hinged with a flip cover through a damping bearing, and the flip cover is used to cover the perspective window and the key area.

[0042] The cavity formed by the upper shell 1 and the lower shell 2 accommodates a waterproof main battery 6, a waterproof backup battery 7, a circuit board 4 and a glue potting box assembly.

[0043] The chamber is connected to the outside world through the drainage holes 24 on the shell. In this embodiment, the upper shell 1 and the lower shell 2 are not specially waterproof and sealed. The bottom surface of the lower shell 2 is provided with a plurality of drainage holes 24 to facilitate the timely discharge of accumulated water.

[0044] The waterproof main battery 6 is clamped in the main battery accommodating groove 21 in the cavity. The main battery accommodating groove 21 extends axially and forms two battery holes on the lower shell 2. Specifically, the inner bottom surface of the lower shell 2 is provided with a plurality of first ribs 211. The plurality of first ribs 211 support the waterproof main battery 6 upward and form the main battery accommodating groove 21. Among them, the end of the first rib 211 near the middle of the waterproof main battery 6 has an arc that bends toward the waterproof main battery 6. In this way, the end of the groove wall of the waterproof main battery 6 accommodating groove has an arc that bends toward the waterproof main battery 6, which can prevent the battery from moving upward during movement.

[0045] The battery hole extends into the lower housing 2 to form a battery bracket 27, such as Figure 3 As shown, the battery bracket 27 comprises an annular structure and is used to support the battery end cap 23. The battery bracket 27 is integrally formed with the bottom and side surfaces of the lower housing 2. In this embodiment, the battery bracket 27 is connected to the first rib 211 via an arcuate surface to better support the battery. At least one drainage hole 24 is provided on the bottom surface of the lower housing 2 below the waterproof main battery. This not only ensures good waterproof performance but also significantly reduces the difficulty and cost of the waterproofing process compared to glue sealing. Furthermore, the provision of the drainage hole 24 prevents water from remaining in the lower housing 2. In this embodiment, a drainage hole 24 is also provided between the two first ribs 211 to quickly drain any water that enters.

[0046] The battery hole is sealed by the battery end cover 23, and the outer wall surface of the battery end cover 23 is flush with the corresponding outer wall surface of the lower shell 2. This not only maintains a good flatness in appearance, but also has anti-dismantling and anti-theft functions. Professionals are required to use professional tools to remove the main battery. After replacing the main battery, a new battery end cover 23 can be installed.

[0047] like Figure 4As shown, the battery end cover 23 includes four elastic claws 231 and a support portion 233 extending toward the main battery receiving slot 21. The four elastic claws 231 are spaced apart circumferentially along the battery end cover 23. In this embodiment, the ends of the upper and lower symmetrically arranged elastic claws 231 are provided with barbed portions 232, and the upper and lower elastic claws 231 are also connected to the inner wall surface of the battery end cover 23 through a connecting plate to improve the structural strength of the upper and lower elastic claws 231. In this embodiment, the outer wall surface of the barbed portion 232 has an angle inclined toward the axis to guide the battery end cover 23 to extend into the battery hole. One barbed portion 232 is engaged with a concave cavity provided at the bottom of the main battery receiving slot 21, and the other barbed portion 232 abuts against the end surface of the battery bracket 27. In this way, the battery end cover 23 can be engaged and positioned with the battery bracket 27 to fix the battery end cover 23. In addition, as shown in FIG. Figure 5 As shown, an axially extending groove 29 is provided on the inner wall of the battery bracket 27 corresponding to the position of the barb portion 232 , and a screw can pass through the groove 29 and be screwed to the elastic claw 231 connected to the barb portion 232 to more stably position the battery end cover 23 .

[0048] The outer wall surfaces of the left and right elastic claws 231 are provided with axially extending ribs 234. The ribs 234 are provided with guiding slopes near the ends of the main battery. The elastic claws 231 can abut against the battery hole through the ribs 234. The barb portion 232 and the guiding slope can both guide the battery end cover into the battery hole for installation. The support portion 233 is provided on the inner end surface of the battery end cover 23. In this embodiment, the support portion 233 includes a central tube, the side walls of which are fixedly connected to the inner end surface of the battery end cover 23 via a plurality of connecting plates. In addition, an annular groove is formed on the outer end surface of the battery end cover 23 to facilitate the operator to identify the position of the battery end cover 23 in low light conditions.

[0049] In this application, the battery end cover 23 and the lower shell 2 are both made of plastic material, and the structural strength of the battery end cover 23 is less than that of the lower shell 2, so that damage to the lower shell 2 can be reduced during the process of forcibly removing the battery end cover 23.

[0050] like Figure 3 As shown, two first elastic pads 25 are further included. The support portion 233 abuts against the main battery through the first elastic pads 25 to achieve shock absorption and relaxation effects. In this embodiment, the first elastic pads 25 are foam.

[0051] The waterproof backup battery 7 is also included. The waterproof backup battery 7 is stuck in the backup battery receiving slot 22 in the chamber. Specifically, the inner bottom surface of the lower shell 2 is also provided with a plurality of second ribs 221. The plurality of second ribs 221 form the backup battery receiving slot 22. The waterproof backup battery 7 can be embedded in the backup battery receiving slot 22. The backup battery receiving slot 22 is arranged parallel to the main battery receiving slot 21. The end of the second rib 221 near the middle of the waterproof backup battery has an arc that bends toward the backup battery 7. In this way, the end of the groove wall of the backup battery receiving slot 22 has an arc that bends toward the waterproof backup battery 7, preventing the waterproof backup battery 7 from moving up and down. The waterproof battery is a prior art, and those skilled in the art can select it according to their needs.

[0052] The two ends of the waterproof backup battery 7 are respectively in contact with the backup battery receiving slot 22 through the second elastic pad 26 to have a shock-absorbing and relaxing effect. The waterproof backup battery 7 provides power when the battery is replaced and also effectively extends the service life of the water meter.

[0053] like Figure 2 and 3 As shown, a valve-controlled actuator 8 is also provided within the lower housing 2. This valve-controlled actuator 8 is conventional and can be selected by those skilled in the art as needed, and will not be described in detail here. In other embodiments of the present invention, no valve is provided in the fluid passage 100, and accordingly, the valve-controlled actuator 8 is not provided within the lower housing 2.

[0054] The glue potting box assembly is fixed in the shell, and the circuit board 4 is glued and sealed in the glue potting box assembly. Specifically, the glue potting box assembly includes a glue potting box 3 and a cover plate 5. The top of the glue potting box 3 is open and forms a concave cavity for accommodating the circuit board 4, wherein the circuit board 4 is clamped in the glue potting box 3, and the cover plate 5 is arranged above the circuit board 4 and clamped at the opening above the glue potting box 3 to protect the circuit board 4.

[0055] like Figure 9 As shown, the outer edge of the cover plate 5 is spaced from the inner wall of the glue potting box 3 to form a glue potting port 31 and a venting slit 32. The venting slit 32 is annular and extends along the outer edge of the cover plate 5. The outer edge of the cover plate 5 is partially recessed inward to form two glue potting ports 31. The two glue potting ports 31 are symmetrically arranged. During glue potting, gas can be exhausted from all sides of the cover plate 5. This can quickly exhaust gas, reduce the generation of bubbles or gas accumulation, and improve glue potting quality. In this embodiment, the venting slit width is 1-2 mm.

[0056] Among them, the cover plate 5 is made of transparent or translucent material, which makes the glue pouring process visual, convenient for glue pouring operation and glue pouring monitoring. The cover plate 5 is integrally formed with a rib plate, which can greatly improve the structural strength of the cover plate to cope with the shrinkage rate of the cover plate caused by large high and low temperature cross-changes, which is beneficial to improving structural stability.

[0057] like Figure 7 and 8 As shown, the area of ​​the cover plate 5 facing the circuit board 4 partially protrudes upward to form a protective cavity 52. ​​The protective cavity 52 is designed so that the glue liquid level can close the protective cavity 52 and leave a gap with the inner bottom surface of the protective cavity 52. ​​In this embodiment, the cover plate 5 and the areas corresponding to the positions of the display screen component, antenna component, communication component and operation button on the circuit board 4 protrude upward to form the protective cavity 52. ​​The display screen component, antenna component, communication component and operation button all pass through the glue layer and extend into the protective cavity 52, thus having good sealing reliability.

[0058] In addition, a UPS uninterruptible power supply is also provided on the circuit board 4. When the waterproof main battery is replaced, the UPS uninterruptible power supply can also provide power. The UPS uninterruptible power supply is a prior art and will not be described in detail here.

[0059] In addition, a mobile alarm unit is provided on the circuit board 4, which is used to monitor the movement of the ultrasonic water meter. In this embodiment, the mobile alarm unit includes an acceleration sensor. When the ultrasonic water meter is removed, the acceleration sensor will send a signal to the external controller to issue an alarm signal to the staff.

[0060] like Figure 7 As shown, the outer edge of the cover plate 5 extends upward to form a curled edge 51. The curled edge 51 is at least 2 mm high to increase the contact area with the glue layer, which helps to improve the sealing reliability. In addition, the height of the curled edge 51 is designed so that the glue liquid level is 5-8 mm above the top surface of the curled edge, further improving the reliability of the glue sealing. In addition, to facilitate the control of the glue liquid level, in this embodiment, the glue liquid level is slightly lower than the top surface of the glue box 3, which facilitates the control of the glue liquid level during the glue filling operation.

[0061] like Figure 8 and 9 As shown, the protective groove 53 formed between the curling edge 51 and the protective cavity 52 or the rib plate is at least 3 mm wide. In this embodiment, only one protective groove 53 is provided. In other embodiments of the present invention, multiple protective grooves 53 can be provided to further enhance the sealing and protective effect and avoid cracking at the joint surface due to different shrinkage rates of the glue layer and the cover plate 5.

[0062] In addition, a retaining wall 54 is provided on the cover plate 5 , and the top surface of the retaining wall 54 is higher than the top surface of the rib plate or the curling edge 51 . Electronic components can be arranged in the enclosure to avoid protecting the electronic components.

[0063] It also includes a cover-opening alarm unit for monitoring the movement of the upper shell 1 relative to the lower shell 2. In this embodiment, the cover-opening alarm unit includes a Hall sensor, which is arranged in the retaining wall 54. When the upper shell 1 is destroyed and dismantled, and the upper shell 1 is displaced relative to the lower shell 2, the Hall sensor can send a signal to the external controller to issue an alarm signal to the staff.

[0064] The outer wall of the glue potting box 3 is provided with a wire clamping groove 33, which extends horizontally along the outer wall of the glue potting box 3. One side of the wire clamping groove 33 is open, making it convenient for wires to be clamped into it for organizing the wires. The top surface of the glue potting box 3 is provided with a plurality of limiting blocks 34, and a wire passage trough is formed between the plurality of limiting blocks 34. The wire passage trough and the wire clamping groove 33 are arranged in a one-to-one correspondence, making it convenient for wires to be flipped sideways into the glue potting box 3 for welding or plugging. In addition, the height of the limiting blocks 34 is designed so that when the glue potting box 3 is assembled in the shell of the ultrasonic water meter, the limiting blocks 34 abut against the inner top surface of the upper shell 1. This can limit the glue potting box 3 and the upper shell 1, while facilitating the wires to pass through the wire passage trough.

[0065] In addition, a wire hole is provided on the bottom surface of the glue potting box 3. In this embodiment, a rubber plug is plugged at the wire hole. The rubber plug is provided with multiple through holes. Electrical wires can pass upward through the through holes into the glue potting box 3 for welding or plugging. After glue potting, the glue seals and solidifies the rubber plug.

[0066] In order to facilitate the equipment and maintenance in the subsequent process, Figures 10-13 As shown, a first buckle assembly, a second buckle assembly and a third buckle assembly are also provided.

[0067] The first snap assembly includes a first plane limiting assembly 101 and a first upper and lower limiting assembly 102. The glue box 3 is connected to the lower shell 2 of the ultrasonic water meter through the first snap assembly. The first plane limiting assembly is used to limit the displacement of the glue box 3 in the plane direction. Specifically, the first plane limiting assembly 101 includes a plurality of first snap-fit ​​ribs arranged circumferentially. The first snap-fit ​​ribs are fixed to the lower shell 2 of the ultrasonic water meter and are respectively connected to the bottom surface and side walls of the lower shell 2, which is beneficial to enhancing the structural strength of the lower shell 2 and the structural strength of the first snap-fit ​​ribs themselves. In this embodiment, the lower shell 2 and the first snap-fit ​​ribs are made of plastic and are integrally formed to simplify the process. Figure 11 As shown, the contact surface between the first snap rib and the glue potting box 3 includes an L-shaped end surface adapted to the outer edge surface at the corresponding position of the glue potting box 3 to support and limit the glue potting box 3 in the plane direction;

[0068] The first upper and lower limit components are used to limit the glue filling box from jumping up and down. Specifically, there are multiple first upper and lower limit components 102 and they are arranged circumferentially, such as Figure 10 and 11As shown, the first upper and lower limit assembly 102 includes a first clamping groove 1021 and a first clamping block 1022, and the first clamping groove 1021 and the first clamping block 1022 are arranged in corresponding positions, wherein the first clamping groove 1021 is fixedly arranged on the outer wall surface of the glue potting box 3 and is integrally formed with the glue potting box 3, and the first clamping block 1022 is fixedly arranged on the inner wall surface of the lower shell body 2 and is integrally formed with the lower shell body 2; wherein the first clamping block 1022 and the first clamping groove 1021 are clearance-matched in the width direction of the first clamping block 1022, on the one hand, it is convenient for smooth engagement, and on the other hand, it can also horizontally limit the glue potting box 3 to improve reliability; in addition, the outer end surface of the first clamping block 1022 facing the glue potting box 3 has an angle inclined outward from bottom to top, so as to guide the first clamping block 1022 to be engaged into the first clamping groove 1021; at the same time, the first clamping groove 1021 is designed so that when the first clamping block 1022 is engaged into the first clamping groove 1021, the bottom surface of the glue potting box 3 contacts the first buckle rib plate;

[0069] like Figure 12 and 13 As shown, the second snap assembly includes a second plane limit assembly 201 and a second upper and lower limit assembly 202, and the glue potting box 3 is connected to the circuit board 4 through the second snap assembly; specifically, the second plane limit assembly 201 includes three positioning columns fixed in the glue potting box 3, and the positioning columns are fixed downward on the inner bottom surface of the glue potting box 3, one of the positioning columns is arranged close to one end of the circuit board 4, and the other two positioning columns are arranged close to the other end of the circuit board 4. An arc-shaped groove is provided at the corresponding position of the outer edge surface of the circuit board 4, so that the positioning column can be embedded in the groove on the outer edge surface of the circuit board 4 to limit the circuit board 4 in the plane direction. In addition, a gap is left between the fixed position and the inner wall surface of the glue potting box 3 to facilitate the removal and placement of the circuit board 4.

[0070] The second upper and lower limit components 202 include a plurality of second upper buckles 2021 and a plurality of second lower buckles 2022. The plurality of second upper buckles 2021 are fixed on the bottom surface of the glue potting box 3 and arranged circumferentially to contact the circuit board 4 downward. Figure 12 As shown, the outer end surface of the second upper buckle 2021 facing the circuit board 4 has an angle inclined outward from bottom to top to guide the circuit board 4 to be engaged between the second upper buckle 2021 and the second lower buckle 2022 .

[0071] Several second lower clips 2022 are fixedly mounted within the glue potting box 3 and arranged circumferentially. The contact surfaces between these second lower clips and the circuit board 4 include L-shaped end surfaces that mate with the outer edge of the circuit board 4, thereby supporting and retaining the circuit board 4. Specifically, three of the second lower clips 2022 connect the inner bottom surface of the glue potting box 3 with the positioning post, securing the circuit board 4 while also enhancing the structural strength of the positioning post, resulting in a sophisticated structure. Furthermore, multiple second lower clips 2022 connect the bottom and side surfaces of the glue potting box 3 and extend upward to be flush with the top surface of the glue potting box 2. The upper end surfaces of the second lower clips 2022 facing the circuit board 4 are angled inward from top to bottom, guiding the circuit board 4 within the glue potting box 3. This facilitates assembly and improves assembly quality.

[0072] The glue filling box 3 is connected to the cover plate 5 through a third snap assembly. The third snap assembly includes a third plane limit assembly 301 and a third upper and lower limit assembly 302. The cover plate 5 is arranged above the circuit board 4. The glue filling box 3 is connected to the cover plate 5 through the third snap assembly. The cover plate 5 is used to seal the opening on the glue filling box 3 to protect the circuit board 4.

[0073] The third plane limiting assembly 301 includes a plurality of third snap ribs fixedly mounted in the glue potting box 3. The plurality of third snap ribs are arranged circumferentially and can abut against the outer edge of the cover plate 5 to position the cover plate 5 in the plane direction. In this embodiment, the second lower snap 2022 having a substantially L-shape forms the third snap ribs to simplify the structure and process.

[0074] The third upper and lower limit assembly 302 includes a plurality of third upper buckles 3021 and a plurality of third lower buckles 3022. The plurality of third upper buckles 3021 are fixed on the inner wall surface of the glue filling box 3 and are arranged circumferentially to contact the cover plate 5 downward. The outer end surface of the third upper buckle 3021 facing the cover plate 5 has an angle inclined from bottom to top and outward to guide the cover plate 5 to be engaged between the third upper buckle 3021 and the third lower buckle 3022.

[0075] Several third lower clips 3022 are fixedly mounted within the glue potting box 3 and arranged circumferentially to contact the cover plate upward. In this embodiment, the second upper clips 2021 form the third lower clips 3022. That is, the top surface of the second upper clips 2021 can contact the bottom surface of the cover plate 5 to support the cover plate 5. In addition, the top surface of the positioning column can also contact the bottom surface of the cover plate to support the cover plate 5.

[0076] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A new type of ultrasonic water meter, characterized in that: The invention comprises a shell fixedly arranged above a fluid channel (100), wherein a waterproof main battery (6), a circuit board (4) and a glue potting box assembly are accommodated in a chamber formed by the shell, wherein the chamber is communicated with the outside through a drainage hole (24) on the shell, wherein the waterproof main battery (6) is clamped in a main battery receiving groove (21) in the chamber, wherein the main battery receiving groove (21) extends axially and forms two battery holes on the shell, wherein the battery holes are blocked by a battery end cover (23), and the outer wall surface of the battery end cover (23) is flush with the corresponding outer wall surface of the shell, wherein the glue potting box assembly is fixed in the shell, and the circuit board (4) is glued and sealed in the glue potting box assembly.

2. The novel ultrasonic water meter according to claim 1, characterized in that: The invention also includes a waterproof backup battery (7), wherein the waterproof backup battery (7) is clamped in a backup battery receiving slot (22) in the chamber, wherein the end of the slot wall of the main battery receiving slot (21) has an arc that bends toward the waterproof main battery (6), and the end of the slot wall of the backup battery receiving slot (22) has an arc that bends toward the waterproof backup battery (7).

3. The novel ultrasonic water meter according to claim 1 or 2, characterized in that: The battery hole extends into the cavity and forms a battery bracket (27). The battery end cover (23) includes a support portion (233) and a plurality of elastic claws (231) extending toward the main battery receiving slot. The support portion (233) abuts against the waterproof main battery (6) laterally to position the waterproof main battery (6). The plurality of elastic claws (231) are arranged along the circumference of the battery end cover, and the end of at least one elastic claw (231) is provided with a barb portion (232) that can engage with the battery bracket (27).

4. The novel ultrasonic water meter according to claim 3 is characterized in that: The support portion (233) abuts against the waterproof main battery (6) laterally via the first elastic pad (25), and the structural strength of the battery end cover (23) is smaller than the structural strength of the shell.

5. The novel ultrasonic water meter according to any one of claims 1, 2 and 4, characterized in that: The glue potting box assembly comprises a glue potting box (3) and a cover plate (5); the glue potting box (3) has an opening at the top and forms a concave cavity for accommodating a circuit board (4); the cover plate (5) is arranged above the circuit board (4) and fixed at the opening above the glue potting box (3) for protecting the circuit board (4); the outer edge surface of the cover plate (5) is spaced apart from the inner wall surface of the glue potting box (3) to form a glue potting port (31) and an exhaust slit (32); and a UPS uninterruptible power supply (UPS) is also provided on the circuit board (4).

6. The novel ultrasonic water meter according to claim 5, characterized in that: The cover plate (5) is made of a transparent or translucent material, and a rib plate is integrally formed on the cover plate (5).

7. The novel ultrasonic water meter according to claim 6, characterized in that: The outer edge of the cover plate (5) extends upward to form a curling edge (51), and the height of the curling edge (51) is designed so that the level of the glue filling liquid is below the top surface of the curling edge (51); at least one protective groove (53) is formed on the inner side of the curling edge (51).

8. The novel ultrasonic water meter according to claim 7, characterized in that: The area of ​​the cover plate (5) facing the circuit board (4) partially protrudes upward to form a protective cavity (52), and the protective cavity (52) is designed so that the glue filling liquid surface can close the protective cavity (52) and leave a gap with the inner bottom surface of the protective cavity (52), and the functional components on the circuit board (4) corresponding to the position of the protective cavity (52) can pass through the glue filling layer and extend into the protective cavity (52).

9. The novel ultrasonic water meter according to any one of claims 6 to 8, characterized in that: The glue potting box (3) is connected to the ultrasonic water meter housing via a first snap assembly, wherein the first snap assembly comprises a first plane limiting assembly (101) and a first upper and lower limiting assembly (102), wherein the first plane limiting assembly (101) is used to limit the displacement of the glue potting box (3) in the plane direction, and the first upper and lower limiting assembly (102) is used to limit the upward and downward movement of the glue potting box (3); the glue potting box (3) is connected to the circuit board via a second snap assembly, wherein the second snap assembly comprises a second plane limiting assembly (201) and a second upper and lower limiting assembly (202). The second plane limiting assembly (201) is used to limit the displacement of the circuit board (4) in the plane direction, and the second upper and lower limiting assembly (202) is used to limit the up and down movement of the circuit board (4); the glue filling box (3) is connected to the cover plate (5) through a third snap assembly, and the third snap assembly includes a third plane limiting assembly (301) and a third upper and lower limiting assembly (302), the third plane limiting assembly (301) is used to limit the displacement of the cover plate (5) in the plane direction, and the third upper and lower limiting assembly (302) is used to limit the up and down movement of the cover plate (5).

10. The novel ultrasonic water meter according to claim 9, characterized in that: The invention also includes a movement alarm unit and a cover-opening alarm unit. The housing includes a detachably connected upper housing (1) and a lower housing (2). The upper housing (1) is arranged away from the fluid channel (100). A perspective window and a key area are provided on the upper housing (1). The upper housing (1) is hinged with a flip cover via a damping bearing. The flip cover is used to shield the perspective window and the key area. The cover-opening alarm unit is arranged on the upper housing (1) and is used to monitor the displacement of the upper housing (1) relative to the lower housing (2). The movement alarm unit is used to monitor the movement of the ultrasonic water meter.

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